In 1 Tim 4:5, the next verse explains food is made holy by word and prayer — the means by which it is received with thanksgiving.

In Titus 1:15, Paul teaches that to the pure all things are pure — directly reinforcing the idea that food is not inherently unclean but sanctified by the believer's faith and prayer.

In Deuteronomy 8:10, Israel is commanded to bless God after eating — this OT practice of thanksgiving over food is the direct background for Paul's teaching that prayer sanctifies what we eat.

In Matthew 14:19, Jesus blesses the loaves and fish before the feeding — a concrete example of sanctifying food by prayer, illustrating the principle Paul states here.

In Matthew 15:11, Jesus declares that what enters the mouth does not defile — this theological foundation supports Paul's claim that all foods are good and sanctified through prayer.

In Mark 6:41, Jesus looks to heaven and blesses the bread before the feeding — another Gospel account of prayer sanctifying food, directly exemplifying Paul's teaching.

In Luke 9:16, Jesus blesses the loaves and fish — the same feeding miracle as Matthew and Mark, providing another narrative example of food being sanctified by prayer.

In Luke 22:19, Jesus gives thanks and breaks bread at the Last Supper — while more sacramental, it still shows food being set apart by prayer, resonating with Paul's principle.

In Acts 11:9, God declares all foods clean—the divine word that sanctifies them, supporting Paul's statement in 1 Timothy 4:5.

John 6:11 shows Jesus giving thanks over bread—a direct example of sanctifying food by prayer, as referenced in 1 Timothy 4:5.

Acts 15:20 imposes food restrictions, contrasting with 1 Timothy 4:5's teaching that no food is unclean when received with thanksgiving.