In Romans 3:2, the Jews were entrusted with God's oracles — this sets up the question of unfaithfulness, showing the trust given despite human failure.

Romans 11:29 declares God's gifts and calling are irrevocable, reinforcing that His faithfulness endures despite human unfaithfulness.

In Romans 11:1-7, Paul shows God preserved a remnant by grace — demonstrating that Israel's faithlessness (Romans 3:3) does not nullify God's faithfulness.

In Romans 9:6, Paul asserts God's word has not failed — directly answering the question in Romans 3:3 whether faithlessness nullifies God's faithfulness.

In Romans 15:8, Christ became a servant to confirm the promises, showing God's truthfulness — the ultimate proof that human unfaithfulness does not nullify God's faithfulness.

In Romans 11:20, unbelief caused Jews to be broken off, yet God's purpose continues for those who stand by faith — directly addresses the outcome of unfaithfulness.

In Romans 10:16, Paul notes Israel's disobedience to the gospel — illustrating the 'some were unfaithful' from Romans 3:3.

Hebrews 6:13-18 emphasizes God's unchangeable promise and oath, showing His faithfulness is immutable despite human failure.

Numbers 23:19 states God does not lie or change His mind, supporting that His faithfulness is unshaken by human failure.

Titus 1:2 states God never lies—directly affirming His faithfulness, which cannot be nullified by human unfaithfulness.

2 Timothy 2:13 directly echoes that even when we are faithless, God remains faithful—reinforcing the same truth.

Matthew 24:35 declares Jesus' words will never pass away, reinforcing that God's faithfulness is eternal.

Jeremiah 33:24-26 affirms God will not reject His chosen people, just as He established day and night, showing His faithfulness.

Isaiah 65:16 calls God the 'God of truth', underscoring His reliability and faithfulness that cannot be nullified.

Isaiah 55:11 assures God's word always accomplishes His purpose, reinforcing that His faithfulness is not thwarted by human unfaithfulness.

Isaiah 54:10 promises God's steadfast love and covenant of peace are unshakable, showing His faithfulness is not nullified.

Isaiah 54:9 compares God's covenant to Noah's flood, assuring His faithfulness endures despite Israel's unfaithfulness.

1 Samuel 15:29 says God does not lie or regret, echoing the truth that His faithfulness remains despite human unfaithfulness.

In Luke 1:20, Zechariah's unbelief does not stop God's word from being fulfilled — directly illustrates that human unfaithfulness does not nullify God's faithfulness.

In Galatians 3:17, the Law does not nullify God's covenant, echoing the principle in Romans 3:3 that human unfaithfulness does not nullify God's faithfulness.

In John 3:33, believers set their seal that God is true — a positive counterpart to the unfaithfulness in Romans 3:3, showing some affirm God's truth.

In Hebrews 4:2, the Israelites failed to benefit because of unbelief — echoing the unfaithfulness theme from Romans 3:3 and its consequences.