In Romans 9:1, Paul uses the identical claim 'I am not lying' while calling God as witness, echoing this oath.

2 Corinthians 11:31 states 'God knows that I am not lying,' a direct parallel to Paul's claim here with the same phrasing.

1 Timothy 2:7 repeats Paul's identical phrase 'I am not lying' in a similar defense of his apostleship, reinforcing his credibility.

Romans 1:9 calls God as witness to Paul's prayers, mirroring his oath before God in this verse.

2 Corinthians 1:23 calls God as witness against Paul's soul, paralleling his invocation of God's witness here.

Philippians 1:8 calls God as witness to Paul's affection, similar to his appeal to God's knowledge in this verse.

1 Thessalonians 2:5 appeals to God as witness, reinforcing Paul's pattern of swearing by God seen here.