Add punctuation: Highly suitable for children from about 5 years and up to young teenager
A: Highly suitable for children from about 5 years and up to young teenager.

Add punctuation: 21 For it had been better for them not to have known the way of righteousness than after they have known it to turn from the holy commandment delivered to them
A: 21 For it had been better for them not to have known the way of righteousness, than, after they have known it, to turn from the holy commandment delivered to them.

Add punctuation: If you have never managed to become pregnant without egg donation finding you are finally pregnant usually brings an overwhelming feeling of joy
A:
If you have never managed to become pregnant without egg donation, finding you are finally pregnant usually brings an overwhelming feeling of joy.