You have no idea of the attack that has happened against the KJV by way of the Modern Translations. Doctrines that have been watered down include the deity of Jesus Christ, the blood atonement, the Trinity, holiness, salvation, hell, proper prayer and fasting, etc.
Here are some examples with the NIV.
Ephesians 5:15 Be very careful, then, how you live—not as unwise but as wise, making the most of every opportunity, because the days are evil. Therefore do not be foolish, but
understand what the Lord’s will is.
Mark 7:16 MSS (Omitted)
Mark 9:44 (Omitted) MSS
Mark 11:26 MSS “Omitted”
Mark 15:28 •Omitted MSS
Luke 17:36 Vulg. Syr. support Luke 17:36 here in Luke 17. But ABQ, and most Uncial MSS. and Memph. Version, omit it.—E. and T.
The whole verse is left out in the Ethiopic version, and in some Greek copies; though it is in the Syriac, Arabic, and Persic versions, and in the Complutensian edition, and in some ancient copies, as Beza observes.
Luke 23:17 The better MSS. are singularly divided as to this verse. Most omit it altogether. One, followed by some of the versions, has it after Luke 23:19.
It would seem probable from these facts that the narrative was originally written without it, that it was then felt that the release of Barabbas required an explanation, and that a note was first added in the margin, either by a transcriber or by the writer himself in a duplicate copy, and then found its way into the text.
John 5:4 In regard to this passage, it should be remarked that the account of the angel in John 5:4 is wanting in many manuscripts, and has been by many supposed to be spurious, The want of John 5:4 and part of John 5:3 in some good manuscripts, and the use of some unusual words in the passage, are more easily accounted for than the evidence in their favor if they were not originally in the text. Indeed John 5:7 is unintelligible without John 5:4.
Acts of the Apostles 8:37 It existed in the time of Irenæus, who quotes it (3:12), but is wanting in all the best MSS., including the Sinaitic, and many versions.
Acts of the Apostles 15:34 This verse is omitted in many ancient MSS., and in others the Greek words vary.
It may very well be a marginal note placed to explain Acts 15:40, where Paul, who did not leave Antioch, is said to have chosen Silas for his companion in his next journey.
Silas therefore must have remained in Antioch after Judas was gone, and such an explanation some reader put on the margin of his copy. But the best Memph. MSS. omit the verse.—E. and T.
Acts of the Apostles 24:7 But the chief captain Lysias] If this verse be an interpolation, it differs from others in the Acts very greatly. In other parts of the book such insertions have merely been made to bring the whole of a narrative under view at once, and there has been no variation of an account previously given elsewhere.
But here we have a passage not representing the facts as stated before.
Acts of the Apostles 28:29 And when, &c.] This verse is omitted in the oldest MSS. and in R.V. And when he had said these words . . .—The whole verse is wanting in many of the earliest MSS. and versions.
It may have been inserted, either by a transcriber, or by the historian himself in a revised copy in order to avoid the apparent abruptness of the transition from Acts 28:28-30.
Romans 16:24 The grace of our Lord Jesus Christ.—This verse is wanting in the oldest group of MSS., and is found chiefly in Græco-Latin Codices and in Antiochene authorities of the fourth and fifth centuries, whose leaning is towards the later text. Ἡ χάρις—ἡμῶν)
The Alexandrians were without this reading.[173]—ἈΜΉΝ, we have lately spoken of this particle. ABC Vulg. (Amiat. MS.) Memph. Versions omit it, whom Lachm. follows.
1 John 5:7 Mill in his long note at the end of John’s first epistle, where he observes that this verse is wanting in all the ancient Greek MSS. of the New Testament which have come down to us, except a few, which shall be mentioned immediately.
It is wanting likewise in the first Syriac, and other ancient versions, particularly the Coptic, Arabic, and Ethiopic, and in many of the present Latin MSS. With respect to quotations from the fathers, Mill acknowledges that few of the Greek writers, who lived before the council of Nice, have cited this verse.
The same he observes concerning those who, after that council, wrote in defence of the Trinity against the Arians, and other heretics; which, he thinks, shows that this verse was not in their copies.” It likewise wants the last clause of 1 John 5:8, namely, and these three are one.
1 Corinthians 1:2 Unto the congregation of God which being at Corinth, to them that are set apart in Christ Jesus, called to be saints, with all that invoke the name of Jesus Christ, in every location, our Lord and theirs.
Christ, in every location, our Lord and theirs
You have no idea of the attack that has happened against the KJV by way of the Modern Translations. Doctrines that have been watered down include the deity of Jesus Christ, the blood atonement, the Trinity, holiness, salvation, hell, proper prayer and fasting, etc.
Here are some examples with the NIV.