The Bible is not a book of lies.
Hebrews 10
10:26 For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins,
10:27 But a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries.
10:28 He that despised Moses' law died without mercy under two or three witnesses:
10:29 Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace?
Jews always regarded salvation as a future event, that will take place when Jesus returns to usher them into the promised kingdom.
That is their blessed hope, the concept of being saved right now is alien to them. Thus they see their task as repenting now and making sure they do well in the midst of trials so that they can be considered worthly to be saved when Jesus returns.
If you read Hebrews to Revelations, that is commonly spoke of. They were expecting the Tribulation to come very soon.
James 1:2 My brethren, count it all joy when ye fall into divers temptations;
3 Knowing this, that the
trying of your faith worketh patience.
4 But let patience have her perfect work, that
ye may be perfect and entire, wanting nothing.
1 Peter 1
3 Blessed be the God and Father of our Lord Jesus Christ, which according to his abundant mercy hath begotten us again unto a lively hope by the resurrection of Jesus Christ from the dead,
4 To an inheritance incorruptible, and undefiled, and that fadeth not away,
reserved in heaven for you,
5 Who are kept by the power of God through faith unto
salvation ready to be revealed in the last time.
6 Wherein ye greatly rejoice,
though now for a season, if need be, ye are in heaviness through manifold temptations:
7
That the trial of your faith, being much more precious than of gold that perisheth, though it be tried with fire, might be found unto praise and honour and glory
at the appearing of Jesus Christ:
8 Whom having not seen, ye love; in whom, though now ye see him not, yet believing, ye rejoice with joy unspeakable and full of glory:
9
Receiving the end of your faith, even the salvation of your souls.