הָ֘ל֤וֹךְ יֵלֵ֨ךְ ׀ וּבָכֹה֮ נֹשֵׂ֪א מֶֽשֶׁךְ־הַ֫זָּ֥רַע בֹּֽ֬א־יָב֥וֹא בְרִנָּ֑ה נֹ֝שֵׂ֗א אֲלֻמֹּתָֽיו׃
Though he goeth on his way weeping that beareth the measure of seed, He shall come home with joy, bearing his sheaves.
Read kabbalistic (mystical) interpretation of Psalms 126:6: and classical mystical sources.