The Bible is not of one voice on the matter of destination and salvation. Indeed, throughout the Hebrew Bible, there are mentions of being saved by the Law, and through the New Testament there are lots of mentions of being saved through Christ, and only through Christ. That much is true, and is the dominant reading.
However, there is also a minority reading that call into question the damnation of any of God's children. These verses seem like asides in their contexts, but taken as a whole they present a viewpoint that all persons will be saved by God.
For instance the Psalms are quietly insistant on God's plans:
Psalm 22:27 wrote:All the ends of the earth will remember and turn to the LORD, And all the families of the nations will worship before You.
Psalm 145:8-10 wrote:The LORD is gracious and merciful; Slow to anger and great in lovingkindness. The LORD is good to all, And His mercies are over all His works. All Your works shall give thanks to You, O LORD, And Your godly ones shall bless You.
Psalm 139:7-8 wrote:Where can I go from Your Spirit? Or where can I flee from Your presence? If I ascend to heaven, You are there; If I make my bed in Sheol, behold, You are there.
There are more, but I'm not interested in prooftexting, just offering verses for consideration.
From the Christian Scriptures, specifically the Gospels, there are other verses that depict a universal salvation.
Matt 18:14 wrote:So it is not the will of your Father who is in heaven that one of these little ones perish.
Luke 3:6 wrote:All flesh shall see the salvation of God.
John 12:32 wrote:When I [Jesus] am lifted up from the earth, I will draw all people to myself.
And from various other places in the NT, there are understandings that nothing, not even belief, will seperate persons from God.
Romans 11:32 wrote:For God has shut up all in disobedience so that He may show mercy to all.
1 Timothy 4:9-10 wrote:It is a trustworthy statement deserving full acceptance. 10 For it is for this we labor and strive, because we have fixed our hope on the living God, who is the Savior of all men, especially of believers.
Revelation 21:25 wrote:On no day will its [Heaven's] gates ever be shut, for there will be no night there.
Finally, there is eternal trust in God that no matter the doctrines of man, God has the last word.
Job 42:2 wrote:I know that You can do all things, And that no purpose of Yours can be thwarted.
(All verses are from the NASB, linked to
here)
I'm not saying that the bible is wrong or errant; I respect that much. What I am saying is that, in my interpretation, the Bible is not unanimous about human destiny, and you must wrestle with these texts, not ignore them or disregard them.