Hebrews 7:21

for God took no oath in appointing the old priests, but he made oath to his appointment, when he said to him, "The Lord has sworn it and he will not change; You are a priest forever!"

Treasury of Scripture Knowledge

Summary

Lord, where are thy former lovingkindnesses, which thou swarest unto David in thy truth?

Bible References

Thou

Hebrews 7:21
for God took no oath in appointing the old priests, but he made oath to his appointment, when he said to him, "The Lord has sworn it and he will not change; You are a priest forever!"