Next Generation Warriors! Frontlines

For the rest, my brethren, delight yourselves in the Lord and continue to rejoice that you are in Him. To keep writing to you [over and over] of the same things is not irksome to me, and it is [a precaution] for your safety.
2 Look out for those dogs [Judaizers, legalists], look out for those mischief-makers, look out for those who mutilate the flesh.
3 For we [Christians] are the true circumcision, who worship God in spirit and by the Spirit of God and exult and glory and pride ourselves in Jesus Christ, and put no confidence or dependence [on what we are] in the flesh and on outward privileges and physical advantages and external appearances—
4 Though for myself I have [at least grounds] to rely on the flesh. If any other man considers that he has or seems to have reason to rely on the flesh and his physical and outward advantages, I have still more!
5 Circumcised when I was eight days old, of the race of Israel, of the tribe of Benjamin, a Hebrew [and the son] of Hebrews; as to the observance of the Law I was of [the party of] the Pharisees,