Acts 7:6

And God spake thus: That his seed should sojourn in a strange land, (and they will inslave them and treat them evil) four hundred years.

Galatians 3:17

And this I say, the covenant which was before confirmed of God through Christ, the law which was four hundred and thirty years after, doth not disannul, so as to make the promise of no effect.

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

Four

Galatians 3:17
And this I say, the covenant which was before confirmed of God through Christ, the law which was four hundred and thirty years after, doth not disannul, so as to make the promise of no effect.