כִּֽי־חִ֭זַּק בְּרִיחֵ֣י שְׁעָרָ֑יִךְ בֵּרַ֖ךְ בָּנַ֣יִךְ בְּקִרְבֵּֽךְ׃
For He hath made strong the bars of thy gates; He hath blessed thy children within thee.
Read kabbalistic (mystical) interpretation of Psalms 147:13: and classical mystical sources.