Matthew 23:22

and anyone who swears by heaven is swearing by the throne of God and by him who sits upon it.

Matthew 5:34

But I tell you not to swear at all, either by heaven, for it is God's throne,

Acts 7:49

" 'The sky is my throne, And the earth a footstool for my feet. What house can you build for me? says the Lord, Or what place is there where I can rest?

Revelation 4:2-3

Immediately after this I found myself in a trance, and there stood a throne in heaven with a being seated on it.

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 tell you not to swear at all, either by heaven, for it is God's throne,
Acts 7:49
" 'The sky is my throne, And the earth a footstool for my feet. What house can you build for me? says the Lord, Or what place is there where I can rest?
Revelation 4:2
Immediately after this I found myself in a trance, and there stood a throne in heaven with a being seated on it.