1 Corinthians 10:1–4 (NRSV)
10 I do not want you to be unaware, brothers and sisters, that our ancestors were all under the cloud, and all passed through the sea, 2 and all were baptized into Moses in the cloud and in the sea, 3 and all ate the same spiritual food, 4 and all drank the same spiritual drink. For they drank from the spiritual rock that followed them, and the rock was Christ.

Theophany.That is a five dollar word about an appearance of a deity to humanity. 

Christophany.That is the way we describe an appearance of the pre-incarnated Christ in the Old Testament.

Paul describes the rock of the Israelites as Christ. Christ was active and engaged with the Israelites in tangible ways that helped them with their daily needs both physically and spiritually.

It is now as was then, Christ is ever present with us. But many times we simply do not have the ears to hear, eyes to see, or wisdom to discern. 
What a great practice for us to take up this Lent to begin looking for Jesus in each ciscumstance we encounter. At the store, look for Jesus. At work, look for Jesus. At the gym, look for Jesus. And when we see Jesus May we find the courage to run and join in. 

Here is a prayer from St Patrick to start our day. 
Christ with me,

Christ before me,

Christ behind me,

Christ in me,

Christ beneath me,

Christ above me,

Christ on my right,

Christ on my left,

Christ when I lie down,

Christ when I sit down,

Christ when I arise,

Christ in the heart of every man who thinks of me,

Christ in the mouth of everyone who speaks of me,

Christ in every eye that sees me,

Christ in every ear that hears me.