Or shalav (Job 3:26) {shaw-lav'}; a primitive root; to be tranquil, i.e. Secure or successful -- be happy, prosper, be in safety.
H7951. shalah
or shale I. [שָׁלֵו שָׁלָה,] verb be quiet, at ease (Ecclus 47:13 שלוה prosperity, Ecclesiasticus 41:1c שליו prosperous, at ease; be tranquil, quiet, ceaee; שְׁלי שְׁלָא, ᵑ7 be at ease, then be careless, thoughtless, go astray [for Hebrew שָׁגַג שָׁגָה,] Aph`el neglect (God, etc.), Biblical Aramaic שָׁלוּ ᵑ7 error; Arabic () be. forgetful, neglectful, content, free (from anxiety)); —
Qal 1. be, (have) quiet: Perfect1singular שָׁלַיְתִּי Job 3:26.
2 be at ease, prosper, of wicked, 3 plural שָׁלוּ Jeremiah 12:1; Lamentations 1:5, also Imperfect3masculine plural יִשְׁלָ֫יוּ (Ges§ 75u) Job 12:5, and (of good) Psalm 122:6 (יֵ֫שֶׁל Job 27:8 see II. שׁלח).
Niph`al Imperfect2masculine plural תִּשָּׁלוּ jussive 2 Chronicles 29:11 be not negligent (easy-going; German 'bequem').
Hiph`il Imperfect2masculine singular תַּשְׁלֶה jussive 2 Kings 4:28 do not mislead me (compare תְּכַזֵּב 4:16), strong Aramaism, whence Klo תַּשְׁגֶּה.
שׁלו שׁלה, (√ of following; Biblical Hebrew I. שׁלה (late)).