Psalms 139:2 Halakhah

אַתָּ֣ה יָ֭דַעְתָּ שִׁבְתִּ֣י וְקוּמִ֑י בַּ֥נְתָּה לְ֝רֵעִ֗י מֵרָחֽוֹק׃

Thou knowest my downsitting and mine uprising, Thou understandest my thought afar off.

Read halakhic rulings (Jewish law) on Psalms 139:2: and classical halakhic sources.