All 3 were present at the same time. The lampstand and members all pointed to the Lord. The laver was wood and copper, The ark was wood and gold. The ark pictures the Lord Jesus' human and divine natures. The laver that of the Holy Spirit baptizing the regenerated.
Parents are a channel of physical life.
What a contrast between being a channel of physical life and the source of all life. And whosoever liveth and believeth in me shall never die. Without God as its source, life has no meaning . It becomes vain, futile and ultimately has no point. In John 15 we see the life lived out and flowing through the branches of the vine.