This message is about growing up spiritually. The author of the book of Hebrews dealt with it, Paul dealt with it, and the church today must deal with it!
But you are a chosen race, a royal priesthood, aholy nation, a people for God’s own possession, so that you may proclaim the excellencies of Him who has called you out of darkness into His marvelous light; 1 Peter 2:9 NASB
For every high priest taken from men is appointed in service to God for the people, to offer both gifts and sacrifices for sins. 2 He is able to deal gently with those who are ignorant and are going astray, since he is also subject to weakness. 3 Because of this, he must make a sin offering for himself as well as for the people. 4 No one takes this honor on himself; instead, a person is called by God, just as Aaron was. 5 In the same way, the Messiah did not exalt Himself to become a high priest, but the One who said to Him, You are My Son; today I have become Your Father,6 also said in another passage, You are a priest forever in the order of Melchizedek.
7 During His earthly life, He offered prayers and appeals with loud cries and tears to the One who was able to save Him from death, and He was heard because of His reverence. 8 Though He was God’s Son, He learned obedience through what He suffered. 9 After He was perfected, He became the source of eternal salvation for all who obey Him, 10 and He was declared by God a high priest in the order of Melchizedek.
11 We have a great deal to say about this, and it’s difficult to explain, since you have become too lazy to understand. 12 Although by this time you ought to be teachers, you need someone to teach you the basic principles of God’s revelation again. You need milk, not solid food. 13 Now everyone who lives on milk is inexperienced with the message about righteousness, because he is an infant. 14 But solid food is for the mature—for those whose senses have been trained to distinguish between good and evil.Hebrews 5 HCSB
And I, brethren, could not speak to you as to spiritual men, but as to men of flesh, as to infants in Christ. I gave you milk to drink, not solid food; for you were not yet able to receive it. Indeed, even now you are not yet able, for you are still fleshly. For since there is jealousy and strife among you, are you not fleshly, and are you not walking like mere men? 1 Corinthians 3:1-3 NASB
“If you love Me, you will keep My commandments. John 14:15 NASB
For this is the love of God, that we keep His commandments; and His commandments are not burdensome. 1 John 5:3 NASB
The thief comes only to steal and kill and destroy; I came that they may have life, and have it abundantly. John 10:10 NASB
But what does it say? “The word is near you, in your mouth and in your heart”—that is, the word of faith which we are preaching, that if you confess with your mouth Jesus as Lord, and believe in your heart that God raised Him from the dead, you will be saved; Romans 10:8-9 NASB
For as many as are the promises of God, in Him they are yes; therefore also through Him is our Amen to the glory of God through us. 2 Corinthians 1:20 NASB
The Lord will give strength to His people;
The Lord will bless His people with peace. Psalms 29:11 NASB
But if the Spirit of Him who raised Jesus from the dead dwells in you, He who raised Christ Jesus from the dead will also give life to your mortal bodies through His Spirit who dwells in you. Romans 8:11 NASB