Scripture declares that the power of the cross and the power of Scripture can be made ineffective or powerless by human tradition and by lack of faith.
Making the word of God of none effect through your tradition, which ye have delivered: and many such like things do ye. Mark 7:13
For Christ sent me not to baptize, but to preach the gospel: not with wisdom of words, lest the cross of Christ should be made of none effect. 1 Corinthians 1:17
For what if some did not believe? shall their unbelief make the faith of God without effect? Romans 3:3
For if they which are of the law be heirs, faith is made void, and the promise made of none effect: Romans 4:14
Not as though the word of God hath taken none effect. Romans 9:6
This word often loses its effect in the following ways:
1) Old tradition affects new revelation or new revelation is placed in the context of the older traditions.
No man also seweth a piece of new cloth on an old garment: else the new piece that filled it up taketh away from the old, and the rent is made worse. And no man putteth new wine into old bottles: else the new wine doth burst the bottles, and the wine is spilled, and the bottles will be marred: but new wine must be put into new bottles. Mark 2:21,22 (Matthew 9:16-17; Luke 5:36-39)
2) The inability to see spiritually
And not as Moses, [which] put a vail over his face, that the children of Israel could not stedfastly look to the end of that which is abolished: But their minds were blinded: for until this day remaineth the same vail untaken away in the reading of the old testament; which [vail] is done away in Christ. But even unto this day, when Moses is read, the vail is upon their heart. Nevertheless when it shall turn to the Lord, the vail shall be taken away. 2 Corinthians 13:16
3) Using man-made traditions to replace Scriptural traditions
But he answered and said unto them, Why do ye also transgress the commandment of God by your tradition? For God commanded, saying, Honour thy father and mother: and, He that curseth father or mother, let him die the death. But ye say, Whosoever shall say to his father or his mother, It is a gift, by whatsoever thou mightest be profited by me; And honour not his father or his mother, he shall be free. Thus have ye made the commandment of God of none effect by your tradition. Ye hypocrites, well did Esaias prophesy of you, saying,
This people draweth nigh unto me with their mouth, and honoureth me with their lips; but their heart is far from me.
But in vain they do worship me, teaching for doctrines the commandments of men. Matthew 15: 3-9
Often those who make the word of God ineffective are sincere religious people. For instance, the Pharisees were quite deeply religious. But the Pharisees are not the only ones guilty of traditions that make God’s word ineffective. Christian churches are also guilty of it. For instance, the book of James states:
Is any sick among you? let him call for the elders of the church; and let them pray over him, anointing him with oil in the name of the Lord: And the prayer of faith shall save the sick, and the Lord shall raise him up; and if he have committed sins, they shall be forgiven him. Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much. James 5:14-16
Yet in many Christian churches, prayer for healing is rarely practiced. And —if it is practiced— it is often done by one person praying (such as the pastor, or the visiting preacher) instead of by elders (plural) which implies more than one person.
Thus the Psalmist asks God to open the eyes of his heart that he may read the statutes, testimonies, and commands of God with unveiled eyes.