Matthew 5:43-48 (NKJV)
Love Your Enemies
43 “You have heard that it was said, ‘You shall love your neighbor[a] and hate your enemy.’ 44 But I say to you, love your enemies, bless those who curse you, do good to those who hate you, and pray for those who spitefully use you and persecute you,[b] 45 that you may be sons of your Father in heaven; for He makes His sun rise on the evil and on the good, and sends rain on the just and on the unjust. 46 For if you love those who love you, what reward have you? Do not even the tax collectors do the same? 47 And if you greet your brethren[c] only, what do you do more than others? Do not even the tax collectors[d] do so? 48 Therefore you shall be perfect, just as your Father in heaven is perfect.
Hebrews 5:12-14 (NKJV)
Spiritual Immaturity
12 For though by this time you ought to be teachers, you need someoneto teach you again the first principles of the oracles of God; and you have come to need milk and not solid food. 13 For everyone who partakes only of milk is unskilled in the word of righteousness, for he is a babe. 14 But solid food belongs to those who are of full age, that is,those who by reason of use have their senses exercised to discern both good and evil.