Just as there is there broad gate and the narrow gate, indeed, if one is not careful, she could end up serving satan by believing in the wrong, "antichrist" spirit rather than the spirit of Truth. The Truth cannot be a lie by definition, and we should serve our Savior in spirit (breath) and Truth. So His true name, professed in His TRUE breath (spirit) is Yâhuwshúa`. The name of the Father is Yâ-hwéh. These are His names in ancient Hebrew, the original language. So the true unadulterated Testimony, good Saying is Yâhuwshúa` is Yâ-hwéh, there are no substitutes. To profess and call on His true names would be the Key of acknowledgement to the narrow gate. The broad gate would be merely believing He existed, died on the cross and rose, but deciding to call Him anything we want, including names of idols, deities, other gods, or the names of the antichrist. For example, you said you are scared of calling on the wrong "Lord". Well, Yahweh said in Hosea 2:16-17 for us not to call Him "lord". This is the translation found in the Purer Scriptures for the REMNANT, downloadable for free on
www.yahuwshua.org
16. and it shall be in that day,”
declares Yâ-hwéh,
“you will call Me “my ’Iysh (Husband )” and you will no longer call for Me “my Lord (Ba`líy)”,
17. and I shall remove the names of the lords (b`âlíym) from her mouth so they shall not be remembered anymore by their name.
See oxford dictionary, that lord means baal (a Phoenician fertility demon).
https://www.oxfordreference.com/view/10.1093/oi/authority.20110803095438703
God means fortune-distributor, in the ancient Hebrew. Hear the pronunciation on the link found in Strong's Concordance Hebrew entry 1409
H1409 - gad - Strong's Hebrew Lexicon (KJV)
It is spelled like "gâd" but pronounced the same as "God".