Exodus 17-19…God brings about water from the rock, Jethro visits Moses, and God instructs Moses at Mount Sinai.
The Rock is one of the titles of Jehovah (Deut. 32:15). In 1 Corinthians 10:1–4, we read that the Rock (of Horeb) was Christ. Christ would stand in our place, the place of the accused, and bear judgment for the sins of His people. The rod is a symbol of judgment—in this case, divine judgment, for Moses was God’s representative. By the rod, Jesus was smitten, and by His stripes we are healed (Isaiah 53:5) from sin. In the same way, by the smiting of the rock at Horeb, water flowed forth, just as the Holy Spirit flows forth from Christ to nourish and equip His church. And so, in the Old Testament, we see this beautiful picture of God’s grace in the salvation of His people, for He stands in our place so that by His wounds we will be healed.
In Exodus 19, Moses gives us an inspired account of what happened at Sinai when the Israelites arrived. God made His presence known on the beginning of the third day, descending as fire and enveloping the mountain in lightning, thunder, cloud and smoke (vv. 16–19). This was truly an awesome sight, and it was meant to remind the people that the God who set them free was no deity to be taken lightly. Other passages of Scripture tell us that angels were also present (Galatians 3:19), their submission to the Lord being a further indication of His glory and power. God’s holiness is also demonstrated in His appearance to the people at Sinai, as the need for the people to be purified is stressed. They are also forbidden to touch the mountain lest they be destroyed (Exodus 19:9–15).
Our need for a Savior is woven throughout these chapters. Each day, we need to be laid low, humbling ourselves before God in repentance, and esteeming Jesus greatly. The more we grow in our understanding of the massive chasm between God and us because of our sin and His holiness, the more we’ll love Christ. If we believe in Him for any other reason, we’ve missed the entire point of Christianity.