Acts 7:6

'And God spake thus, That his seed shall be sojourning in a strange land, and they shall cause it to serve, and shall do it evil four hundred years,

Genesis 15:13

and He saith to Abram, 'knowing -- know that thy seed is a sojourner in a land not theirs, and they have served them, and they have afflicted them four hundred years,

Genesis 15:16

and the fourth generation doth turn back hither, for the iniquity of the Amorite is not yet complete.'

Exodus 12:40-41

And the dwelling of the sons of Israel which they have dwelt in Egypt is four hundred and thirty years;

Galatians 3:17

and this I say, A covenant confirmed before by God to Christ, the law, that came four hundred and thirty years after, doth not set aside, to make void the promise,

Treasury of Scripture Knowledge

Summary

And God spake on this wise, That his seed should sojourn in a strange land; and that they should bring them into bondage, and entreat them evil four hundred years.

Bible References

That

Genesis 15:13
and He saith to Abram, 'knowing -- know that thy seed is a sojourner in a land not theirs, and they have served them, and they have afflicted them four hundred years,

Four

Exodus 12:40
And the dwelling of the sons of Israel which they have dwelt in Egypt is four hundred and thirty years;
Galatians 3:17
and this I say, A covenant confirmed before by God to Christ, the law, that came four hundred and thirty years after, doth not set aside, to make void the promise,