18 Let no one disqualify you insisting on asceticism and worship of angels, going on in detail about visions, puffed up without reason by his sensuous mind 19 and not holding fast to the Head, from whom the whole body, nourished and knit together through its joints and ligaments, grows with a growth that is from God.
This passage deals with some more ways that we might be looking to Jesus plus something else to help us. We don’t need Jesus plus self denial of pleasure or enjoyment in order to “transcend” this world (asceticism). We don’t need extra information from angels. Angels are created beings who aren’t there to be worshipped – they worship Jesus (see Revelation)! Why direct our worship to anything other than Jesus? Anything else is setting our sights too low. God given visions are good, but obsessing about them about visions and focussing on them rather than the Bible is not. Feelings and emotions (the sensuous mind) are involved in our relationship and our worship of God but they are only part of it. Getting emotional and “feeling” something during worship or prayer is not the ultimate goal. Knowing more of Jesus and becoming more like Him is the goal.
Jesus is the Head of the body (the church) and we need to be fixed firmly to Jesus in whatever we do, not disconnected from the Head, running off down our own paths with good intentions but replacing Him with something else, whatever that thing is (asceticism, angel worship, visions, the sensuous mind). The only way the church can grow, numerically and spiritually, is by getting its nourishment from Jesus. He holds the body together.