Acts 11:8

But I said - By no means, Lord, because, a common or unclean thing, hath at no time entered into my mouth.

Romans 14:14

I know and am persuaded in the Lord Jesus - that, nothing, is profane of itself, - save to him who reckoneth anything to be profane, unto that man, it is profane,

Leviticus 10:10

That ye may make a difference, between the sacred and the common, - and between the unclean and the clean;

Leviticus 11:47

That ye may make a difference - between the unclean and the clean, - and between the living thing that may be eaten, and the living thing which may not be eaten.

Ezra 9:11-12

which thou didst command by the hand of thy servants the prophets, saying, As for the land which, ye, are entering to possess, an impure land, it is, with the impurity of the peoples of the lands, - with their abominations, which have filled it from one end to the other, with their uncleanness.

Hosea 9:3

They shall not dwell in the land of Yahweh, but Ephraim shall return to Egypt, and, in Assyria - that which is unclean, shall they eat.

Mark 7:2

and, observing certain of his disciples, that, with defiled hands, that is unwashed, they are eating bread, - -

1 Corinthians 7:14

For the husband that believeth not is hallowed in the wife, and the wife that believeth not is hallowed in the brother: else were, your children, impure, but, now, are they, pure.

Treasury of Scripture Knowledge

Summary

But I said, Not so, Lord: for nothing common or unclean hath at any time entered into my mouth.

Bible References

Common

Mark 7:2
and, observing certain of his disciples, that, with defiled hands, that is unwashed, they are eating bread, - -
Romans 14:14
I know and am persuaded in the Lord Jesus - that, nothing, is profane of itself, - save to him who reckoneth anything to be profane, unto that man, it is profane,