Great job mailmandan!...to add to your excellent grace-based exhortation..here is one about the "tasting " part and Hebrews 6..
There is a difference between tasting and drinking......Jesus knew of this concept too..
Matthew 27:34 (KJV)
[SUP]34 [/SUP] They gave him vinegar to drink mingled with gall: and when he had tasted thereof, he would not drink.
Matthew 26:27-28 (NASB)
[SUP]27 [/SUP] And when He had taken a cup and given thanks, He gave it to them, saying, "Drink from it, all of you;
[SUP]28 [/SUP] for this is My blood of the covenant, which is poured out for many for forgiveness of sins.
John 7:37-38 (KJV)
[SUP]37 [/SUP] In the last day, that great day of the feast, Jesus stood and cried, saying, If any man thirst, let him come unto me, and drink.
[SUP]38 [/SUP] He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water.
John 4:14 (NASB)
[SUP]14 [/SUP] but whoever drinks of the water that I will give him shall never thirst; but the water that I will give him will become in him a well of water springing up to eternal life."
Notice that 1 Corinthians 12:13 says drink into one Spirit, not taste into one Spirit