'Suffer' is an older English word which means today 'to let or allow' and so it simply means 'allow the children' or 'let the children.' It has absolutely nothing to do with 'suffering' as we understand it today in terms of hardship or pain.
Look in the related link below for some information that may help. However searching the King James version of the bible on line (see related link) does not seem to find 'TEHILLAH' in it!
The Authorized King James Version is an English translation of the Christian Holy Bible begun in 1604 and completed in 1611 by the Church of England. The King James Version translation effort was...