Matthew 23:22

and he who swears by Heaven swears by the throne of God and by Him sitting thereon.

Matthew 5:34

but I say to you, Swear not at all; neither by Heaven, because it is God's throne;

Acts 7:49

'Heaven is My throne; and the earth is the footstool of My feet: what manner of house will ye build me? saith the Lord, Or what is the place of My rest?

Revelation 4:2-3

Straightway I was in the Spirit, and, behold, there was a throne set in Heaven, and One sitting upon the throne;

Treasury of Scripture Knowledge

Summary

And he that shall swear by heaven, sweareth by the throne of God, and by him that sitteth thereon.

Bible References

By the

Matthew 5:34
but I say to you, Swear not at all; neither by Heaven, because it is God's throne;
Acts 7:49
'Heaven is My throne; and the earth is the footstool of My feet: what manner of house will ye build me? saith the Lord, Or what is the place of My rest?
Revelation 4:2
Straightway I was in the Spirit, and, behold, there was a throne set in Heaven, and One sitting upon the throne;