Hebrews 6:13

For when God made the promise to Abraham, because He could swear by no greater, He sware by Himself, saying,

Luke 1:73

according to the oath which He sware to Abraham our father,

Hebrews 6:16-18

For men swear by a greater Being, and an oath for confirmation is to them an end of all controversy.

Treasury of Scripture Knowledge

Summary

For when God made promise to Abraham, because he could swear by no greater, he sware by himself,

General references

Bible References

He sware

Hebrews 6:16
For men swear by a greater Being, and an oath for confirmation is to them an end of all controversy.
Luke 1:73
according to the oath which He sware to Abraham our father,

General references

Revelation 10:6
lifted up his hand to heaven, and sware by Him that liveth for ever, who created the heaven and the things therein, and the earth and the things that are in it, and the sea and the things therein, that there shall be time no longer: