Ye are the children of Jehovah your God (cf. Exodus 4:22, etc.). As his children, it behooved them to avoid all that would be offensive to him or indicate distrust in him. Ye shall not cut yourselves, etc.
(cf. Le 19:28; Deuteronomy 21:5; Jeremiah 16:6; Jeremiah 48:36, Jeremiah 48:37; Ezekiel 7:18; Ezekiel 27:31). ("Ex hac opinions sunt ilia varia et detestabilia genera lugendi, paedores, muliebres lacerationes genarum, pectoris, feminum, capitis percussiones."
Cicero, 'Tusc. Quaest.,' 3.26; see also ' De Legibus,' 2.25.