Now an omer is the tenth part of an {q} ephah.

(q) Which measure contained about five gallons.

Matthew Henry's Concise Commentary

16:32-36 God having provided manna to be his people's food in the wilderness, the remembrance of it was to be preserved. Eaten bread must not be forgotten. God's miracles and mercies are to be had in remembrance. The word of God is the manna by which our souls are nourished, Mt 4:4. The comforts of the Spirit are hidden manna, Re 2:17. These come from heaven, as the manna did, and are the support and comfort of the Divine life in the soul, while we are in the wilderness of this world. Christ in the word is to be applied to the soul, and the means of grace are to be used. We must every one of us gather for ourselves, and gather in the morning of our days, the morning of our opportunities; which if we let slip, it may be too late to gather. The manna must not be hoarded up, but eaten; those who have received Christ, must by faith live upon him, and not receive his grace in vain. There was manna enough for all, enough for each, and none had too much; so in Christ there is enough, but not more than we need. But those who ate manna, hungered again, died at last, and with many of them God was not well pleased; whereas they that feed on Christ by faith, shall never hunger, and shall die no more, and with them God will be for ever well pleased. Let us seek earnestly for the grace of the Holy Spirit, to turn all our knowledge of the doctrine of Christ crucified, into the spiritual nourishment of our souls by faith and love.