You say: “Lord Allah has spoken the Truth; so you follow the upright way of Ibrahim, and he was not among the Mushriks”.
The Truth is one of the forty names of Adhikr. Adhikr is the only Straightpath that is sent to all Messengers as explained in verse 6: 153. If anyone rejects Adhikr, at the time of his death Lord will tell him: “You didn’t testify the Truth and so you didn’t perform the prayer, but you rejected and turned away” as told in verses 75: 31-32. It is told in verse 74: 40-47: “When the inmates of Paradise ask the Mujirims who are the inmates of Saqar valley of Hell that what has put them in Hell, they will reply: ‘We were not of those who prayed, nor did we feed the poor, we used to enter into vain talks with others, and we used to deny the Day of Judgment until death’”. Verse 4: 122 ends as: "Who are the most Truth-telling than the Lord?" See explanation 2: 58, 135-140, and 3: 65-68.