Dear h-man: Yes, our Father, Abba, does indeed desire all mankind to come unto Him. As the sovereign Lord of the universe His desires are always met! ALWAYS! "He is the mercy seat for our sins, and not for our sins only, but for the sins of the whole world."
It is no wonder that you are so mixed up and confused when you say The Father is the mercy seat!
It is the Redemption Through the Blood of Christ, not the blood of God, to whom the blood sacrifices were made.
Hebrews 9:5 And over it the cherubims of glory shadowing the mercyseat; of which we cannot now speak particularly. G2435 ἱλαστήριον hilastērion
Hebrews 9:11 But Christ being come an high priest of good things to come, by a greater and more perfect tabernacle, not made with hands, that is to say, not of this building;
12 Neither by the blood of goats and calves,
but by his own blood he entered in once into the holy place, having obtained eternal redemption for us.
13 For if the blood of bulls and of goats, and the ashes of an heifer sprinkling the unclean, sanctifieth to the purifying of the flesh:
14
How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?
15 And for this cause
he is the mediator of the new testament, that by means of death, for the redemption of the transgressions that were under the first testament, they which are called might receive the promise of eternal inheritance.
H3727 כּפּרת kappôreth mercy [seat] Occurrences: 27; G1656 ἔλεος eleos
Exodus 30:6 And thou shalt put it before the vail that is by the ark of the testimony, before
the mercy seat that is over the testimony, where I will meet with thee.
Matthew 9:13 But go ye and
learn what that meaneth, I will have mercy, and not sacrifice: for I am not come to call the righteous, but sinners to repentance.
G2433 ιλασθητι a propitiation
G2435 ιλαστηριον; ιλασμος; votive gift, used as a propitiatory gift; Gnadenstuhl
seat of grace; mercy seat; Ro. 325; llk. 13
Romans 3:25 Whom God hath set forth to be a propitiation through faith in his [Christ's] blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God;
Romans 3:26 To declare, I say, at this time his righteousness: that he might be just, and the justifier
of him which believeth in Jesus.
2 Corinthians 5:10 For we must all appear before the judgment seat of Christ; that every one may receive the things done in his body, according to that he hath done,
whether it be good or bad.
Romans 6:23 For the wages of sin is death; but
the gift of God is eternal life through Jesus Christ our Lord. [of him which believeth in Jesus.]
Romans 2:6 Who will render to every man
according to his deeds:
Romans 2:7 To them who by patient continuance in well doing
seek for glory and honour and immortality, eternal life:
Romans 2:8 But unto them that are contentious, and do not obey the truth, but obey unrighteousness,
indignation and wrath,
Hebrews 10:27 But a certain fearful looking for of judgment and fiery indignation,
which shall devour the adversaries.
Hebrews 10:30 For we know him that hath said,
Vengeance belongeth unto me, I will recompense, saith the Lord. And again, The Lord shall judge his people.
Hebrews 10:31
It is a fearful thing to fall into the hands of the living God.
Nahum 1:2 God is jealous, and the LORD revengeth; the LORD revengeth, and is furious;
the LORD will take vengeance on his adversaries, and he reserveth wrath for his enemies.
Luke 19:26 For I say unto you, That unto every one which hath shall be given; and from him that hath not,
even that he hath shall be taken away from him.
Luke 19:27 But those mine enemies, which would not that I should reign over them, bring hither,
and slay them before me.
1 Thessalonians 2:13 For this cause also thank we God without ceasing, because, when ye received the word of God which ye heard of us, ye received it not as the word of men, but as it is in truth, the word of God, which effectually
worketh also in you that believe.
