Contradiction with Psalm 10:1
While 1 Thessalonians 1:2 speaks of giving thanks and implies closeness with God, Psalm 10:1 questions God's presence, asking why He stands far off in times of trouble.
Psalm 10:1: Why standest thou afar off, O LORD? [why] hidest thou [thyself] in times of trouble?
Contradiction with Isaiah 1:15
In contrast to 1 Thessalonians 1:2, which involves prayer and thanks, Isaiah 1:15 speaks of God hiding His eyes and not listening to prayers due to people's iniquity.
Isaiah 1:15: And when ye spread forth your hands, I will hide mine eyes from you: yea, when ye make many prayers, I will not hear: your hands are full of blood. [make...: Heb. multiply prayer] [blood: Heb. bloods]
Contradiction with Jeremiah 14:12
1 Thessalonians 1:2 involves prayers of gratitude, whereas Jeremiah 14:12 indicates God not accepting those prayers but instead promising punishment.
Jeremiah 14:12: When they fast, I will not hear their cry; and when they offer burnt offering and an oblation, I will not accept them: but I will consume them by the sword, and by the famine, and by the pestilence.
Contradiction with Amos 5:21-23
This passage expresses God rejecting worship and offerings, contrasting with thankful prayers in 1 Thessalonians 1:2, which are presumably accepted.
Amos 5:21-23: I hate, I despise your feast days, and I will not smell in your solemn assemblies. [in...: or, your holy days]
Contradiction with Matthew 7:21-23
Contradicts the assurance in 1 Thessalonians 1:2 of benevolent communication with God, by stating that not everyone who calls on the Lord will enter the kingdom of heaven.
Matthew 7:21-23: Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.