The Command to proclaim the Truth openly
Allah commanded His Messenger;
فَاصْدَعْ بِمَا تُوْمَرُ
Therefore openly proclaim what you have been commanded,
Allah commanded His Messenger to convey what He sent him with, to proclaim and spread the Message, which means confronting the idolators with it.
Ibn Abbas said that the Ayah,
فَاصْدَعْ بِمَا تُوْمَرُ
(Therefore openly proclaim that what you have been commanded), means,
"Go ahead with it."
According to another report it means,
افْعَلْ
مَا تُوْمَرُ
(Therefore proclaim that which you commanded).
Mujahid said,
"It is reciting the Qur'an aloud during prayer."
Abu Ubaydah reported that Abdullah bin Mas`ud said,
"The Prophet was still practicing and preaching Islam secretly until this Ayah was revealed;
فَاصْدَعْ بِمَا تُوْمَرُ
(Therefore openly proclaim that which you are commanded), then he and his Companions came out into the open."
The Command to turn away from the Idolators, and the Guarantee of Protection against the Mockers
Allah's statement,
وَأَعْرِضْ عَنِ الْمُشْرِكِينَ
and turn away from idolators.
meaning - convey that which has been revealed to you by your Lord, and do not pay attention to the idolators who want to turn you away from the signs of Allah.
وَدُّواْ لَوْ تُدْهِنُ فَيُدْهِنُونَ
They wish that you should compromise for them, so that they would compromise for you. (68;9)
إِنَّا كَفَيْنَاكَ الْمُسْتَهْزِيِينَ