The ink horn here is the best way that Ezekiel can describe this event, physical things are shown to describe the spiritual Psalm118:15&16 hand of the Lord doeth valiantly.
16: The right hand of the Lord is exalted: the right hand of the Lord doeth valiantly Exodus 13:9 And it shall be for a sign unto thee upon thine hand, and for a memorial between thine eyes, that the Lord’s law may be in thy mouth: for with a strong hand hath the Lord brought thee out of Egypt.
Exodus31:13,17
13: Speak thou also unto the children of Israel, saying, Verily my sabbaths ye shall keep: for it is a sign between me and you throughout your generations; that ye may know that I am the Lord that doth sanctify you. The Jews or Israelites are the root from whence come the word of God to us, they obeyed the commandments of God, the feasts days so should we. It does not matter how the Sunday worship is loved, God did not command us saints to worship on Sunday which is the 1st day of the week.
17: It is a sign between me and the children of Israel for ever: for in six days the Lord made heaven and earth, and on the seventh day he rested and was refreshed.
John 19:15 and he laid his hands on them,
Revelation 10:2 And he had in his hand a little book open: and he set his right foot upon the sea and his left foot on the earth.
Deuteronomy 6:8 And thou shalt bind them for a sign upon thine hand, and they shall be as frontlets between thine eye Deuteronomy 11:18 King James Version (KJV)
18; Therefore, shall ye lay up these my words in your heart and in your soul, and bind them for a sign upon your hand, that they may be as frontlets between your eyes When God told the Israelites to bind the law which is the 10 commandments on their hands, it is to take it with faith and write it spiritually as a sign or mark on them hand believing that God had written it there for them to obey it and by God’s grace to do what God says, unfortunately, they acted in a canal way and wrote it on papers or leather and tied it to their hands. Remember the one on the tassel in Deuteronomy 22:122 Thou shalt make the fringes upon the four quarters of thy vesture, wherewith thou coverest thyself.