قَائِلِينَ:«أَيْنَ هُوَ الْمَوْلُودُ مَلِكُ الْيَهُودِ؟ فَإِنَّنَا رَأَيْنَا نَجْمَهُ فِي الْمَشْرِقِ وَأَتَيْنَا لِنَسْجُدَ لَهُ».
إنجيل متى (2 :2)
https://st-takla.org/Bibles/BibleSearch/showVerses.php?book=...

https://almagd.tv/bible/mat/2/2

in the link below you will find
So what is this "pure spiritual milk" we need to hunger for? The word "pure" simply means undiluted or uncontaminated. The word used to describe this milk in the original Greek is logikon, which could also mean "rational or reasonable." More importantly, it shares a root with the word logos, "the word." This phrase is sometimes translated as "pure milk of the word," as in the NASB. "The word / Word of God" can refer both to His revealed word in Scripture, including the message of the gospel—and to Christ Himself, the Word made flesh (John 1:14).

So this command means we must learn to crave the undiluted word of God, as a newborn craves milk. By drinking this milk, taking in God's word, drawing close to Christ, believers will continue to grow up in our salvation. Peter has already made clear that God has secured our salvation (1 Peter 1:3–5), that we are being saved (1 Peter 1:9), and that we will receive salvation fully when Christ is revealed (1 Peter 1:5). For now, taking in the "milk" of God's Word is the intended path of spiritual growth.