Albert Barnes Commentary Isaiah 49:20

"The children of thy bereavement shall yet say in thine ears, The place is too strait for me; give place to me that I may dwell." — Isaiah 49:20 (ASV)

The children which you shall have - The increase of the population shall be so great.

After you have lost the other - Hebrew, ‘The sons of your widowhood.’ That is, after you have lost those that have been killed in the wars, and those that have died in captivity in a distant land, there shall be again a great increase as if they were given to a widowed mother.

And perhaps the general truth is taught here: that the persecution of the people of God will be attended ultimately with a vast increase, and that all the attempts to obliterate the church will only tend finally to enlarge and strengthen it.

Shall say again in your ears - Or, shall say to you.

The place is too narrow for me - There is not room for us all. The entire language here denotes a vast accession to the church of God.

It is indicative of such an increase as took place when the gospel was proclaimed by the apostles to the Gentiles, and of such an increase as shall yet more abundantly take place when the whole world shall become converted to God.