What is idolatry?

Idolatry is, instead of, or besides that one true God, who has manifested himself in his word, to contrive, or have any other object, in which men place their trust. (a)

(a) Eph.5:5 For this ye know, that no whoremonger, nor unclean person, nor covetous man, who is an idolater, hath any inheritance in the kingdom of Christ and of God. 1 Chron.16:26 For all the gods of the people are idols: but the LORD made the heavens. Philip.3:19 Whose end is destruction, whose God is their belly, and whose glory is in their shame, who mind earthly things.) Gal.4:8 Howbeit then, when ye knew not God, ye did service unto them which by nature are no gods. Eph.2:12 That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world: 1 John 2:23 Whosoever denieth the Son, the same hath not the Father: (but) he that acknowledgeth the Son hath the Father also. 2 John 1:9 Whosoever transgresseth, and abideth not in the doctrine of Christ, hath not God. He that abideth in the doctrine of Christ, he hath both the Father and the Son. John 5:23 That all men should honour the Son, even as they honour the Father. He that honoureth not the Son honoureth not the Father which hath sent him.