James 5:12 directly quotes this command—do not swear, let yes be yes—applying it to the church.

Paul defends his consistent yes/no, echoing Jesus' command that speech be straightforward and trustworthy.

Ephesians 4:25 commands truthfulness to neighbors, matching the call for simple yes/no honesty.

Colossians 3:9 forbids lying to one another, consistent with the straightforward speech commanded here.

John 8:44 identifies the devil as father of lies, paralleling the idea that false oaths originate from the evil one.