1Cor. 13:1 ¶ If I speak in the tongues of mortals and of angels, but do not have love, I am a noisy gong or a clanging cymbal. 2 And if I have prophetic powers, and understand all mysteries and all knowledge, and if I have all faith, so as to remove mountains, but do not have love, I am nothing. 3 If I give away all my possessions, and if I hand over my body so that I may boast, but do not have love, I gain nothing.

Jer. 17:9 The heart is devious above all else; it is perverse— who can understand it?

Phil. 2:1 ¶ If then there is any encouragement in Christ, any consolation from love, any sharing in the Spirit, any compassion and sympathy, 2 make my joy complete: be of the same mind, having the same love, being in full accord and of one mind. 3 Do nothing from selfish ambition or conceit, but in humility regard others as better than yourselves. 4 Let each of you look not to your own interests, but to the interests of others.

Rom. 12:15 Rejoice with those who rejoice, weep with those who weep.