Verses with the word sware in the New Testament (7 verses):

Mark 6:23
And he sware unto her, Whatsoever thou shalt ask of me, I will give it thee, unto the half of my kingdom.

Luke 1:73
The oath which he sware to our father Abraham,

Hebrews 3:11
So I sware in my wrath, They shall not enter into my rest.)

Hebrews 3:18
And to whom sware he that they should not enter into his rest, but to them that believed not?

Hebrews 6:13
For when God made promise to Abraham, because he could swear by no greater, he sware by himself,

Hebrews 7:21
(For those priests were made without an oath; but this with an oath by him that said unto him, The Lord sware and will not repent, Thou art a priest for ever after the order of Melchisedec:)

Revelation 10:6
And sware by him that liveth for ever and ever, who created heaven, and the things that therein are, and the earth, and the things that therein are, and the sea, and the things which are therein, that there should be time no longer: