fervent: Αγαπην εκτενη [Strong's G1618], "intense love; for love shall cover (or covers, καλυπτει [Strong's G2572], in the present tense, as several copies read) a multitude of sins;" which seems a reference to the proverb, "love covereth all sins," Pro 10:12. 1Pe 1:22; 1Co 13:1-13, 1Co 14:1; 1Th 3:12, 1Th 4:9-10; 2Th 1:3; 1Ti 1:5; Heb 13:1; 2Pe 1:6-7
for: Pro 10:12, Pro 12:16, Pro 17:9, Pro 18:13; 1Co 13:7; Jam 5:20