illud, explained by ut neque, etc. Cf. [2. 15].
ORATION III.
[§2].
quod salutis, etc., 'because the pleasure of safety is assured, while our lot at birth is doubtful; because again we are not conscious of our birth, while we can feel the delight of preservation.' nascendi condicio = the external circumstances, surroundings to which we are born. See [on 2. 14].
illum, i.e. Romulus.
benevolentia famaque, hendiadys, 'with affectionate praise.'
templum is the consecrated ground (τέμενος); delubrum the actual shrine (ναός).
[§3].