When Isaac was old and his eyes were so weak that he could no longer see, he called for Esau his older son and said to him, "My son." "Here I am," he answered.
NIV
WHEN ISAAC was old and his eyes were dim so that he could not see, he called Esau his elder son, and said to him, My son! And he answered him, Here I am.
AMP
And it came to pass, that when Isaac was old, and his eyes were dim, so that he could not see, he called Esau his eldest son, and said unto him, My son: and he said unto him, Behold, here am I.
KJV
He gives strength to the weary and increases the power of the weak.
NIV
He gives power to the faint and weary, and to him who has no might He increases strength [causing it to multiply and making it to abound]. [II Cor. 12:9.]AMP
He giveth power to the faint; and to them that have no might he increaseth strength.
KJV
If I must boast, I will boast of the things that show my weakness.
NIV
If I must boast, I will boast of the things that [show] my infirmity [of the things by which I am made weak and contemptible in the eyes of my opponents].
AMP
If I must needs glory, I will glory of the things which concern mine infirmities.
KJV
But now that you know God – or rather are known by God – how is it that you are turning back to those weak and miserable forces? Do you wish to be enslaved by them all over again?
NIV
Now, however, that you have come to be acquainted with and understand and know [the true] God, or rather to be understood and known by God, how can you turn back again to the weak and beggarly and worthless elementary things [of all religions before Christ came], whose slaves you once more want to become?
AMP
But now, after that ye have known God, or rather are known of God, how turn ye again to the weak and beggarly elements, whereunto ye desire again to be in bondage?
KJV
Therefore, strengthen your feeble arms and weak knees.
NIV
So then, brace up and reinvigorate and set right your slackened and weakened and drooping hands and strengthen your feeble and palsied and tottering knees, [Isa. 35:3.]AMP
Wherefore lift up the hands which hang down, and the feeble knees;
KJV
That is why, for Christ's sake, I delight in weaknesses, in insults, in hardships, in persecutions, in difficulties. For when I am weak, then I am strong.
NIV
So for the sake of Christ, I am well pleased and take pleasure in infirmities, insults, hardships, persecutions, perplexities and distresses; for when I am weak [in human strength], then am I [truly] strong (able, powerful in divine strength).
AMP
Therefore I take pleasure in infirmities, in reproaches, in necessities, in persecutions, in distresses for Christ's sake: for when I am weak, then am I strong.
KJV
It is better not to eat meat or drink wine or to do anything else that will cause your brother or sister to fall.
NIV
The right thing is to eat no meat or drink no wine [at all], or [do anything else] if it makes your brother stumble or hurts his conscience or offends or weakens him.
AMP
It is good neither to eat flesh, nor to drink wine, nor any thing whereby thy brother stumbleth, or is offended, or is made weak.
KJV