Eph 4:14 that we should no longer be children, tossed to and fro and carried about with every wind of doctrine, by the trickery of men, in the cunning craftiness of deceitful plotting
Biblical discernment is important yet one of the most lacking things in the Church today. Biblical discernment is the ability to judge well, listen, make biblical sound judgements. By biblical discernment we know, learn, approve, love and also protect ourselves from wolves in sheep skins.
The immature in the faith are considered children, babes, infants. We are called to have child like faith but grownups in understanding, Heb 5:13 “For everyone who partakes only of milk is unskilled (immature) in the word of righteousness, for he is a babe (child).14 But solid food belongs to those who are of full age(matured), that is, those who by reason of use have their senses exercised to discern both good and evil.”
The call is to no longer be children in understanding. Even Paul addresses his once upon a time state, 1Co 13:11 “When I was a child, I spoke as a child, I understood as a child, I thought as a child; but when I became a man, I put away childish things”. In my judgement, I think that 1Co 14:1 is the key to understanding the verse above. When Paul as a child in the faith, he may have pursued or emphasized on the gifts over conducts as priority, in chapter 14:1 as matured man in the faith, he encourages us to “pursue love (as primary) and desire spiritual gifts (as secondary)”, not long after in the same chapter he writes “Brethren, do not be children in understanding; …, but in understanding be mature” (1Co 14:20).