If we did not have free will then how did anyone sin.
Lucifer was created perfect in his ways until iniquity was found in him but if he did not have free will then how was iniquity found in him when he was created perfect in his ways.
Adam and Eve were created in the image of God an innocent nature in flesh with no sin on their record so if they did not have free will how did they sin.
Jas 1:13 Let no man say when he is tempted, I am tempted of God: for God cannot be tempted with evil, neither tempteth he any man:
Jas 1:14 But every man is tempted, when he is drawn away of his own lust, and enticed.
Jas 1:15 Then when lust hath conceived, it bringeth forth sin: and sin, when it is finished, bringeth forth death.
If Adam and Eve did not have free will that would mean that God wanted them to fall which goes against His nature of being good and wanting us to be good.
God does not want us to sin so He is not going to cause us to sin.
If we did not have free will then God's kingdom is not true love but robotic love and God is not evil to condemn people that do not have a choice but to not accept the truth because they do not have free will.
If God did choose in the beginning who will be saved without their choice then what is the purpose of the earth.
God could of made them to be with Him and cut out the earth and the result would be the same for they do not choose their salvation.
The Lamb was slain from the foundation of the world for God calls things that have not happened yet as though they already happened.
The saints are predestined to salvation means that God had the plan to give mankind salvation from the foundation of the earth and this salvation is to whoever wants it.
1Ti 2:3 For this is good and acceptable in the sight of God our Saviour;
1Ti 2:4 Who will have all men to be saved, and to come unto the knowledge of the truth.
2Pe 3:9 The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance.
Act 17:30 And the times of this ignorance God winked at; but now commandeth all men every where to repent.
Rev 22:17 And the Spirit and the bride say, Come. And let him that heareth say, Come. And let him that is athirst come. And whosoever will, let him take the water of life freely.
God wants all people to be saved so we have free will to choose salvation or reject it.