One does not "root oneself";
Matthew 13;18 Hear ye therefore the parable of the sower. 19
When any one heareth the word of the kingdom,
and understandeth it not, then cometh the wicked one, and catcheth away that which was sown in his heart. This is he which received seed by the way side. 20
But he that received the seed into stony places, the same i
s he that heareth the word, and anon with joy receiveth it; 21
Yet hath he not root in himself, but dureth for a while: for when tribulation or persecution ariseth because of the word, by and by he is offended.
22 He also that received seed among the thorns
is he that heareth the word; and the care of this world, and the deceitfulness of riches, choke the word, and he becometh unfruitful.
23
But he that received seed into the good ground is he that
heareth the word, and understandeth it; which also beareth fruit, and bringeth forth, some an hundredfold, some sixty, some thirty. KJV
One root themselves by understanding scripture to grow thereby & bear fruit. That is the whole point about abiding in His words as His disciples to bear fruit; not for salvation that was received by believing in Him, but for bearing fruit as His disciples.
John 8:.30 As he spake these words, many believed on him. 31 Then said Jesus to those Jews which believed on him, If ye continue in my word, then are ye my disciples indeed; 32 And ye shall know the truth, and the truth shall make you free. KJV
2 Timothy 3:13 But evil men and seducers shall wax worse and worse, deceiving, and being deceived. 14 But continue thou in the things which thou hast learned and hast been assured of, knowing of whom thou hast learned them; 15 And that from a child thou hast known the holy scriptures, which are able to make thee wise unto salvation through faith which is in Christ Jesus. 16 All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: 17 That the man of God may be perfect, thoroughly furnished unto all good works. ~ KJV
Ephesians 4:12 For the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ: 13 Till we all come in the unity of the faith, and of the knowledge of the Son of God, unto a perfect man, unto the measure of the stature of the fulness of Christ: 14 That we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, and cunning craftiness, whereby they lie in wait to deceive; 15 But speaking the truth in love, may grow up into him in all things, which is the head, even Christ: 16 From whom the whole body fitly joined together and compacted by that which every joint supplieth, according to the effectual working in the measure of every part, maketh increase of the body unto the edifying of itself in love. ~ KJV
How many today has evangelists giving altar calls for public witness of salvation in these crusades but hardly follow up in discipling new believers? These are saved believers that have received the words but because they are not rooted in the word to discern the lies of the evolution theory, they are offended & turn away from the truth in His words & thus Him as well, in becoming former believers. But He still abides for why we are to call them to go to Him for help to see the lies in the evolution theory & the truth in His words so they can continue to grow in Him & His words in being fruitful as His disciples & be received by Him as vessels unto honor in His House rather than denied by Him in becoming vessels unto dishonor in His House after the great tribulation when they shall be resurrected..